> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jim Davis > Sent: Wednesday, August 06, 2003 5:54 PM > To: [EMAIL PROTECTED] > Subject: EOS 10d metering and shutter rants > > > Here's some thought to get things moving here perhaps... > > I'm convinced the metering in the 10d could be better, or there is a > bug. Several times, while shooting a scene, shooting a series of 3 or > 4 shots, maybe a couple of seconds apart, I've had one of the images > be way underexposed. I check the EXIF info and find it's 2 or 3 stops > underexposed from the others with basically the same scene. > <<BIG SNIP>> > > Or I could use partial metering and try and find a medium grey value > in the scene and set Manual with comp to that. > > What do you guys do? > :-) > > > Jim Davis
Hi Jim, You mean you are relying on the meter to work right under dynamic, changing lighting and contrast conditions? LOL! You are too funny! 8^) But seriously, you're just experiencing the problem with ALL TTL metering schemes, the meter is not smart enough to know what you're doing nor what your photographic intent is. That whole B.S. about taking thousands of images and using them in the meter's program is all marketing B.S., they have been claiming this since before there were microprocessors capable of doing a comparison of even 1 or 2 scenes in the time it takes to you to press the shutter and the shutter to release! Pure marketing B.S., even with today's processors I sincerely doubt that there is enough memory and processor power in the camera to perform a comparison with more than 1-2 scenes in the time is takes for the shutter to release. On the other hand all those sample images could be analyzed for patterns for a given set of meter segment readings and a generalized model could be developed considering contrast preferences, scene dynamic range, camera orientation etc. Then this information model could be programmed into the meter algorithm to produce a bias for the meter to use in conjunction with the selected AF point, camera orientation and photographers intent. But I don't think anyone does all this no matter what the marketing people say. Anyway, if the shot is important I use a handheld incident meter and simply note my relationship with the sun and adjust exposure if I shoot in a different direction. This works perfectly for any kids of sports action outdoors under natural light, it should work fine for birds too. Cheers/Chip * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
